gov.noaa.nodc:0303738 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-02-06T16:08:37Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Seismicity Catalog Collection, 2150 BC to 1996 AD (NCEI Accession 0303738) 2025-04-30 publication 2025-04-22 creation International DOI Foundation (IDF) 10.25921/f28m-kb46 NOAA National Centers for Environmental Information gov.noaa.nodc:0303738 NCEI Archive Management System 0303738 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Nicolas Arcos NOAA National Centers for Environmental Information (NCEI) nicolas.arcos@noaa.gov resourceProvider NOAA National Centers for Environmental Information (NCEI) resourceProvider Nicolas Arcos NOAA National Centers for Environmental Information (NCEI) nicolas.arcos@noaa.gov pointOfContact Lindsey Wright NOAA National Centers for Environmental Information (NCEI) lindsey.m.wright@noaa.gov collaborator Whitside, Lowell S. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author Dater, David T. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author Dunbar, Paula K. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author Racey, Stewart D. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author Buhmann, Ronald W. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author Hittelman, Allen M. National Geophysical Data Center / World Data Service-A Solid Earth Geophysics https://www.ngdc.noaa.gov/ HTTPS US National Geophysical Data Center (NGDC) website Institution web page information author tableDigital The Seismicity Catalog Collection is a compilation data on over four million earthquakes dating from 2150 BC to 1996 AD from NOAA's National Geophysical Data Center and U.S. Geological Survey's National Earthquake Information Center. The data include information on epicentral time of origin, location, magnitudes, depth and other earthquake-related parameters. NCEI decommissioned the Seismicity Catalog Collection in April 2025 with no further updates. Comments and questions may be sent to: ncei.info@noaa.gov. Environmental and hazard impact studies, Research completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact notPlanned https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0303738 Preview graphic PNG 0303738 NCEI ACCESSION NUMBER 2025-04-18 publication Earthquake theme NODC DATA TYPES THESAURUS Seismograph instrument NODC INSTRUMENT TYPES THESAURUS in situ theme NODC OBSERVATION TYPES THESAURUS NOAA National Centers for Environmental Information dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS World-Wide Distribution place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian ICSU-WDS > International Council for Science - World Data System project Global Change Master Directory (GCMD) Project Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian EARTH SCIENCE > HUMAN DIMENSIONS > NATURAL HAZARDS > EARTHQUAKES EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES EARTH SCIENCE > SOLID EARTH > TECTONICS > EARTHQUAKES > EARTHQUAKE OCCURRENCES theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Earthquakes Epicenter Hypocenter Seismology theme Provider Keywords SEISMOGRAPHS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian compiled data instrument Provider Instruments GEOGRAPHIC REGION > GLOBAL GEOGRAPHIC REGION > GLOBAL OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian JRY22K Send2NCEI Submission Package ID accessLevel: public otherRestrictions Cite as: Whitside, Lowell S.; Dater, David T.; Dunbar, Paula K.; Racey, Stewart D.; Buhmann, Ronald W.; Hittelman, Allen M. (2025). Seismicity Catalog Collection, 2150 BC to 1996 AD (NCEI Accession 0303738). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/f28m-kb46. Accessed [date]. Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. license These data were produced by NOAA and are not subject to copyright protection in the United States. NOAA waives any potential copyright and related rights in these data worldwide through the Creative Commons Zero 1.0 Universal Public Domain Dedication (CC0-1.0). SPDX License: Creative Commons Zero v1.0 Universal (CC0-1.0) eng; USA utf8 environment oceans -180 180 -90 90 1996-09-30 SE-31, New Catalog of Strong Earthquakes in the USSR from Ancient Times through 1977 (1982). NGSDC-4, Reevaluation of Modified Mercalli Intensity Scale for Earthquakes using Distance as SE-35, Documentation of Earthquake Algorithms (1984). KGRD 23, The Natural Hazards Data Resources Directory (NHRAIC Special Publication No. 21) (1990). SE-49, Catalog of Significant Earthquakes, 2150 BC - 1991 AD SE-41, Directory of Seismograph Stations - East Asia (1985) NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media. Contact NCEI for other distribution options and instructions. Originator data format 1351.744 https://doi.org/10.25921/f28m-kb46 HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/303738 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/303738 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0238/0303738/ FTP Any FTP client FTP These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). download dataset NCEI Accession 0303738 v1.1 was published. 2025-04-30T18:41:10Z NCEI Accession 0303738 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0303738/1.1 HTTPS NCEI Accession 0303738 v1.1 published 2025-04-30T18:41:10Z download dataset Parameter or Variable: Earthquakes (measured); Units: magnitude; Observation Category: other; Sampling Instrument: compiled data asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian Seismograph Seismograph Earthquakes are recorded by instruments called seismographs. The recording they make is called a seismogram. The seismograph has a base that sets firmly in the ground, and a heavy weight that hangs free. When an earthquake causes the ground to shake, the base of the seismograph shakes too, but the hanging weight does not. Instead the spring or string that it is hanging from absorbs all the movement. The difference in position between the shaking part of the seismograph and the motionless part is what is recorded.